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Title: Diode laser welding of aluminum to steel

Abstract

Laser welding of dissimilar materials was carried out by using a high power diode laser to join aluminum to steel in a butt-joint configuration. During testing, the laser scan rate was changed as well as the laser power: at low values of fluence (i.e. the ratio between laser power and scan rate), poor joining was observed; instead at high values of fluence, an excess in the material melting affected the joint integrity. Between these limiting values, a good aesthetics was obtained; further investigations were carried out by means of tensile tests and SEM analyses. Unfortunately, a brittle behavior was observed for all the joints and a maximum rupture stress about 40 MPa was measured. Apart from the formation of intermeltallic phases, poor mechanical performances also depended on the chosen joining configuration, particularly because of the thickness reduction of the seam in comparison with the base material.

Authors:
; ;  [1]
  1. University of Rome Tor Vergata, Department of Mechanical Engineering, Via del Politecnico 1, 00133 Rome (Italy)
Publication Date:
OSTI Identifier:
21516717
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1353; Journal Issue: 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589700; (c) 2011 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AESTHETICS; ALUMINIUM; COMPARATIVE EVALUATIONS; CONFIGURATION; LASER WELDING; MATERIALS; PERFORMANCE; PRESSURE RANGE MEGA PA; RUPTURES; SCANNING ELECTRON MICROSCOPY; SEMICONDUCTOR LASERS; STEELS; STRESSES; TESTING; THERMAL ANALYSIS; THICKNESS; ALLOYS; CARBON ADDITIONS; DIMENSIONS; ELECTRON MICROSCOPY; ELEMENTS; EVALUATION; FABRICATION; FAILURES; IRON ALLOYS; IRON BASE ALLOYS; JOINING; LASERS; METALS; MICROSCOPY; PRESSURE RANGE; SEMICONDUCTOR DEVICES; SOLID STATE LASERS; TRANSITION ELEMENT ALLOYS; WELDING

Citation Formats

Santo, Loredana, Quadrini, Fabrizio, and Trovalusci, Federica. Diode laser welding of aluminum to steel. United States: N. p., 2011. Web. doi:10.1063/1.3589700.
Santo, Loredana, Quadrini, Fabrizio, & Trovalusci, Federica. Diode laser welding of aluminum to steel. United States. https://doi.org/10.1063/1.3589700
Santo, Loredana, Quadrini, Fabrizio, and Trovalusci, Federica. 2011. "Diode laser welding of aluminum to steel". United States. https://doi.org/10.1063/1.3589700.
@article{osti_21516717,
title = {Diode laser welding of aluminum to steel},
author = {Santo, Loredana and Quadrini, Fabrizio and Trovalusci, Federica},
abstractNote = {Laser welding of dissimilar materials was carried out by using a high power diode laser to join aluminum to steel in a butt-joint configuration. During testing, the laser scan rate was changed as well as the laser power: at low values of fluence (i.e. the ratio between laser power and scan rate), poor joining was observed; instead at high values of fluence, an excess in the material melting affected the joint integrity. Between these limiting values, a good aesthetics was obtained; further investigations were carried out by means of tensile tests and SEM analyses. Unfortunately, a brittle behavior was observed for all the joints and a maximum rupture stress about 40 MPa was measured. Apart from the formation of intermeltallic phases, poor mechanical performances also depended on the chosen joining configuration, particularly because of the thickness reduction of the seam in comparison with the base material.},
doi = {10.1063/1.3589700},
url = {https://www.osti.gov/biblio/21516717}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1353,
place = {United States},
year = {Wed May 04 00:00:00 EDT 2011},
month = {Wed May 04 00:00:00 EDT 2011}
}